1119 lines
30 KiB
C
1119 lines
30 KiB
C
/*
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* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2003 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: ifiter_ioctl.c,v 1.19.2.5.2.14 2004/06/22 04:40:23 marka Exp $ */
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/*
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* Obtain the list of network interfaces using the SIOCGLIFCONF ioctl.
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* See netintro(4).
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*/
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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#ifdef ISC_PLATFORM_HAVEIF_LADDRCONF
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#define lifc_len iflc_len
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#define lifc_buf iflc_buf
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#define lifc_req iflc_req
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#define LIFCONF if_laddrconf
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#else
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#define ISC_HAVE_LIFC_FAMILY 1
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#define ISC_HAVE_LIFC_FLAGS 1
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#define LIFCONF lifconf
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#endif
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#ifdef ISC_PLATFORM_HAVEIF_LADDRREQ
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#define lifr_addr iflr_addr
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#define lifr_name iflr_name
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#define lifr_dstaddr iflr_dstaddr
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#define lifr_broadaddr iflr_broadaddr
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#define lifr_flags iflr_flags
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#define lifr_index iflr_index
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#define ss_family sa_family
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#define LIFREQ if_laddrreq
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#else
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#define LIFREQ lifreq
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#endif
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#endif
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#define IFITER_MAGIC ISC_MAGIC('I', 'F', 'I', 'T')
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#define VALID_IFITER(t) ISC_MAGIC_VALID(t, IFITER_MAGIC)
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#define ISC_IF_INET6_SZ \
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sizeof("00000000000000000000000000000001 01 80 10 80 XXXXXXloXXXXXXXX\n")
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struct isc_interfaceiter {
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unsigned int magic; /* Magic number. */
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isc_mem_t *mctx;
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int mode;
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int socket;
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struct ifconf ifc;
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void *buf; /* Buffer for sysctl data. */
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unsigned int bufsize; /* Bytes allocated. */
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unsigned int pos; /* Current offset in
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SIOCGIFCONF data */
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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int socket6;
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struct LIFCONF lifc;
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void *buf6; /* Buffer for sysctl data. */
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unsigned int bufsize6; /* Bytes allocated. */
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unsigned int pos6; /* Current offset in
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SIOCGLIFCONF data */
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isc_result_t result6; /* Last result code. */
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isc_boolean_t first6;
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#endif
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#ifdef HAVE_TRUCLUSTER
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int clua_context; /* Cluster alias context */
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isc_boolean_t clua_done;
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struct sockaddr clua_sa;
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#endif
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#ifdef __linux
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FILE * proc;
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char entry[ISC_IF_INET6_SZ];
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isc_result_t valid;
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isc_boolean_t first;
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#endif
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isc_interface_t current; /* Current interface data. */
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isc_result_t result; /* Last result code. */
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};
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#ifdef HAVE_TRUCLUSTER
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#include <clua/clua.h>
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#include <sys/socket.h>
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#endif
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/*
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* Size of buffer for SIOCGLIFCONF, in bytes. We assume no sane system
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* will have more than a megabyte of interface configuration data.
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*/
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#define IFCONF_BUFSIZE_INITIAL 4096
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#define IFCONF_BUFSIZE_MAX 1048576
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#ifdef __linux
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#ifndef IF_NAMESIZE
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# ifdef IFNAMSIZ
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# define IF_NAMESIZE IFNAMSIZ
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# else
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# define IF_NAMESIZE 16
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# endif
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#endif
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#endif
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static isc_result_t
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getbuf4(isc_interfaceiter_t *iter) {
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char strbuf[ISC_STRERRORSIZE];
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iter->bufsize = IFCONF_BUFSIZE_INITIAL;
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for (;;) {
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iter->buf = isc_mem_get(iter->mctx, iter->bufsize);
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if (iter->buf == NULL)
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return (ISC_R_NOMEMORY);
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memset(&iter->ifc.ifc_len, 0, sizeof(iter->ifc.ifc_len));
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iter->ifc.ifc_len = iter->bufsize;
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iter->ifc.ifc_buf = iter->buf;
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/*
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* Ignore the HP/UX warning about "integer overflow during
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* conversion". It comes from its own macro definition,
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* and is really hard to shut up.
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*/
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if (ioctl(iter->socket, SIOCGIFCONF, (char *)&iter->ifc)
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== -1) {
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if (errno != EINVAL) {
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isc__strerror(errno, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_GETIFCONFIG,
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"get interface "
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"configuration: %s"),
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strbuf);
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goto unexpected;
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}
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/*
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* EINVAL. Retry with a bigger buffer.
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*/
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} else {
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/*
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* The ioctl succeeded.
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* Some OS's just return what will fit rather
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* than set EINVAL if the buffer is too small
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* to fit all the interfaces in. If
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* ifc.lifc_len is too near to the end of the
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* buffer we will grow it just in case and
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* retry.
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*/
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if (iter->ifc.ifc_len + 2 * sizeof(struct ifreq)
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< iter->bufsize)
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break;
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}
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if (iter->bufsize >= IFCONF_BUFSIZE_MAX) {
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_BUFFERMAX,
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"get interface "
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"configuration: "
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"maximum buffer "
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"size exceeded"));
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goto unexpected;
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}
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isc_mem_put(iter->mctx, iter->buf, iter->bufsize);
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iter->bufsize *= 2;
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}
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return (ISC_R_SUCCESS);
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unexpected:
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isc_mem_put(iter->mctx, iter->buf, iter->bufsize);
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iter->buf = NULL;
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return (ISC_R_UNEXPECTED);
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}
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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static isc_result_t
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getbuf6(isc_interfaceiter_t *iter) {
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char strbuf[ISC_STRERRORSIZE];
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isc_result_t result;
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iter->bufsize6 = IFCONF_BUFSIZE_INITIAL;
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for (;;) {
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iter->buf6 = isc_mem_get(iter->mctx, iter->bufsize6);
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if (iter->buf6 == NULL)
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return (ISC_R_NOMEMORY);
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memset(&iter->lifc, 0, sizeof(iter->lifc));
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#ifdef ISC_HAVE_LIFC_FAMILY
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iter->lifc.lifc_family = AF_INET6;
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#endif
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#ifdef ISC_HAVE_LIFC_FLAGS
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iter->lifc.lifc_flags = 0;
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#endif
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iter->lifc.lifc_len = iter->bufsize6;
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iter->lifc.lifc_buf = iter->buf6;
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/*
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* Ignore the HP/UX warning about "integer overflow during
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* conversion". It comes from its own macro definition,
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* and is really hard to shut up.
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*/
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if (ioctl(iter->socket6, SIOCGLIFCONF, (char *)&iter->lifc)
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== -1) {
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#ifdef __hpux
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/*
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* IPv6 interface scanning is not available on all
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* kernels w/ IPv6 sockets.
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*/
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if (errno == ENOENT) {
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isc__strerror(errno, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_GETIFCONFIG,
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"get interface "
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"configuration: %s"),
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strbuf);
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result = ISC_R_FAILURE;
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goto cleanup;
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}
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#endif
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if (errno != EINVAL) {
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isc__strerror(errno, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_GETIFCONFIG,
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"get interface "
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"configuration: %s"),
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strbuf);
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result = ISC_R_UNEXPECTED;
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goto cleanup;
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}
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/*
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* EINVAL. Retry with a bigger buffer.
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*/
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} else {
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/*
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* The ioctl succeeded.
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* Some OS's just return what will fit rather
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* than set EINVAL if the buffer is too small
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* to fit all the interfaces in. If
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* ifc.ifc_len is too near to the end of the
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* buffer we will grow it just in case and
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* retry.
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*/
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if (iter->lifc.lifc_len + 2 * sizeof(struct LIFREQ)
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< iter->bufsize6)
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break;
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}
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if (iter->bufsize6 >= IFCONF_BUFSIZE_MAX) {
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_BUFFERMAX,
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"get interface "
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"configuration: "
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"maximum buffer "
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"size exceeded"));
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result = ISC_R_UNEXPECTED;
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goto cleanup;
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}
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isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
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iter->bufsize6 *= 2;
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}
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if (iter->lifc.lifc_len != 0)
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iter->mode = 6;
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return (ISC_R_SUCCESS);
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cleanup:
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isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
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iter->buf6 = NULL;
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return (result);
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}
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#endif
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isc_result_t
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isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
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isc_interfaceiter_t *iter;
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isc_result_t result;
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char strbuf[ISC_STRERRORSIZE];
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REQUIRE(iterp != NULL);
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REQUIRE(*iterp == NULL);
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iter = isc_mem_get(mctx, sizeof(*iter));
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if (iter == NULL)
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return (ISC_R_NOMEMORY);
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iter->mctx = mctx;
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iter->mode = 4;
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iter->buf = NULL;
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iter->pos = (unsigned int) -1;
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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iter->buf6 = NULL;
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iter->pos6 = (unsigned int) -1;
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iter->result6 = ISC_R_NOMORE;
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iter->socket6 = -1;
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iter->first6 = ISC_FALSE;
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#endif
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/*
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* Get the interface configuration, allocating more memory if
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* necessary.
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*/
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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result = isc_net_probeipv6();
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if (result == ISC_R_SUCCESS) {
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/*
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* Create an unbound datagram socket to do the SIOCGLIFCONF
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* ioctl on. HP/UX requires an AF_INET6 socket for
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* SIOCGLIFCONF to get IPv6 addresses.
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*/
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if ((iter->socket6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
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isc__strerror(errno, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_MAKESCANSOCKET,
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"making interface "
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"scan socket: %s"),
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strbuf);
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result = ISC_R_UNEXPECTED;
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goto socket6_failure;
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}
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iter->result6 = getbuf6(iter);
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if (iter->result6 != ISC_R_NOTIMPLEMENTED &&
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iter->result6 != ISC_R_SUCCESS)
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goto ioctl6_failure;
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}
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#endif
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if ((iter->socket = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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isc__strerror(errno, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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isc_msgcat_get(isc_msgcat,
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ISC_MSGSET_IFITERIOCTL,
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ISC_MSG_MAKESCANSOCKET,
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"making interface "
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"scan socket: %s"),
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strbuf);
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result = ISC_R_UNEXPECTED;
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goto socket_failure;
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}
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result = getbuf4(iter);
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if (result != ISC_R_SUCCESS)
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goto ioctl_failure;
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/*
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* A newly created iterator has an undefined position
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* until isc_interfaceiter_first() is called.
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*/
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#ifdef HAVE_TRUCLUSTER
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iter->clua_context = -1;
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iter->clua_done = ISC_TRUE;
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#endif
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#ifdef __linux
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iter->proc = fopen("/proc/net/if_inet6", "r");
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iter->valid = ISC_R_FAILURE;
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iter->first = ISC_FALSE;
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#endif
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iter->result = ISC_R_FAILURE;
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iter->magic = IFITER_MAGIC;
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*iterp = iter;
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return (ISC_R_SUCCESS);
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ioctl_failure:
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if (iter->buf != NULL)
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isc_mem_put(mctx, iter->buf, iter->bufsize);
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(void) close(iter->socket);
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socket_failure:
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#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
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if (iter->buf6 != NULL)
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isc_mem_put(mctx, iter->buf6, iter->bufsize6);
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ioctl6_failure:
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if (iter->socket6 != -1)
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(void) close(iter->socket6);
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socket6_failure:
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#endif
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isc_mem_put(mctx, iter, sizeof(*iter));
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return (result);
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}
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#ifdef HAVE_TRUCLUSTER
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static void
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get_inaddr(isc_netaddr_t *dst, struct in_addr *src) {
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dst->family = AF_INET;
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memcpy(&dst->type.in, src, sizeof(struct in_addr));
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}
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|
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static isc_result_t
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internal_current_clusteralias(isc_interfaceiter_t *iter) {
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struct clua_info ci;
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if (clua_getaliasinfo(&iter->clua_sa, &ci) != CLUA_SUCCESS)
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return (ISC_R_IGNORE);
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memset(&iter->current, 0, sizeof(iter->current));
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iter->current.af = iter->clua_sa.sa_family;
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memset(iter->current.name, 0, sizeof(iter->current.name));
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sprintf(iter->current.name, "clua%d", ci.aliasid);
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iter->current.flags = INTERFACE_F_UP;
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get_inaddr(&iter->current.address, &ci.addr);
|
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get_inaddr(&iter->current.netmask, &ci.netmask);
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return (ISC_R_SUCCESS);
|
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}
|
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#endif
|
|
|
|
#ifdef __linux
|
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static isc_result_t
|
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linux_if_inet6_next(isc_interfaceiter_t *iter) {
|
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if (iter->proc != NULL &&
|
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fgets(iter->entry, sizeof(iter->entry), iter->proc) != NULL)
|
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iter->valid = ISC_R_SUCCESS;
|
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else
|
|
iter->valid = ISC_R_NOMORE;
|
|
return (iter->valid);
|
|
}
|
|
|
|
static void
|
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linux_if_inet6_first(isc_interfaceiter_t *iter) {
|
|
if (iter->proc != NULL) {
|
|
rewind(iter->proc);
|
|
(void)linux_if_inet6_next(iter);
|
|
} else
|
|
iter->valid = ISC_R_NOMORE;
|
|
iter->first = ISC_FALSE;
|
|
}
|
|
|
|
static isc_result_t
|
|
linux_if_inet6_current(isc_interfaceiter_t *iter) {
|
|
char address[33];
|
|
char name[IF_NAMESIZE+1];
|
|
char strbuf[ISC_STRERRORSIZE];
|
|
struct in6_addr addr6;
|
|
struct ifreq ifreq;
|
|
int ifindex, prefix, scope, flags;
|
|
int res;
|
|
unsigned int i;
|
|
|
|
if (iter->valid != ISC_R_SUCCESS)
|
|
return (iter->valid);
|
|
if (iter->proc == NULL) {
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"/proc/net/if_inet6:iter->proc == NULL");
|
|
return (ISC_R_FAILURE);
|
|
}
|
|
|
|
/*
|
|
* Format for /proc/net/if_inet6:
|
|
* (see iface_proc_info() in net/ipv6/addrconf.c)
|
|
* <addr6:32> <ifindex:2> <prefix:2> <scope:2> <flags:2> <name:8>
|
|
*/
|
|
res = sscanf(iter->entry, "%32[a-f0-9] %x %x %x %x %16s\n",
|
|
address, &ifindex, &prefix, &scope, &flags, name);
|
|
if (res != 6) {
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"/proc/net/if_inet6:sscanf() -> %d (expected 6)",
|
|
res);
|
|
return (ISC_R_FAILURE);
|
|
}
|
|
if (strlen(address) != 32) {
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"/proc/net/if_inet6:strlen(%s) != 32", address);
|
|
return (ISC_R_FAILURE);
|
|
}
|
|
for (i = 0; i < 16; i++) {
|
|
unsigned char byte;
|
|
static const char hex[] = "0123456789abcdef";
|
|
byte = ((index(hex, address[i * 2]) - hex) << 4) |
|
|
(index(hex, address[i * 2 + 1]) - hex);
|
|
addr6.s6_addr[i] = byte;
|
|
}
|
|
iter->current.af = AF_INET6;
|
|
/* iter->current.ifindex = ifindex; */
|
|
iter->current.flags = 0;
|
|
|
|
memset(&ifreq, 0, sizeof(ifreq));
|
|
INSIST(sizeof(ifreq.ifr_name) <= sizeof(iter->current.name));
|
|
strncpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name));
|
|
|
|
if (ioctl(iter->socket, SIOCGIFFLAGS, (char *) &ifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"%s: getting interface flags: %s",
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
|
|
if ((ifreq.ifr_flags & IFF_UP) != 0)
|
|
iter->current.flags |= INTERFACE_F_UP;
|
|
#ifdef IFF_POINTOPOINT
|
|
if ((ifreq.ifr_flags & IFF_POINTOPOINT) != 0)
|
|
iter->current.flags |= INTERFACE_F_POINTTOPOINT;
|
|
#endif
|
|
if ((ifreq.ifr_flags & IFF_LOOPBACK) != 0)
|
|
iter->current.flags |= INTERFACE_F_LOOPBACK;
|
|
if ((ifreq.ifr_flags & IFF_BROADCAST) != 0)
|
|
iter->current.flags |= INTERFACE_F_BROADCAST;
|
|
#ifdef IFF_MULTICAST
|
|
if ((ifreq.ifr_flags & IFF_MULTICAST) != 0)
|
|
iter->current.flags |= INTERFACE_F_MULTICAST;
|
|
#endif
|
|
|
|
/*
|
|
* enable_multicast_if() requires scopeid for setsockopt,
|
|
* so associate address with their corresponding ifindex.
|
|
*/
|
|
isc_netaddr_fromin6(&iter->current.address, &addr6);
|
|
isc_netaddr_setzone(&iter->current.address, (isc_uint32_t)ifindex);
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
if (prefix > 8) {
|
|
addr6.s6_addr[i] = 0xff;
|
|
prefix -= 8;
|
|
} else {
|
|
addr6.s6_addr[i] = (0xff << (8 - prefix)) & 0xff;
|
|
prefix = 0;
|
|
}
|
|
}
|
|
isc_netaddr_fromin6(&iter->current.netmask, &addr6);
|
|
strncpy(iter->current.name, name, sizeof(iter->current.name));
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Get information about the current interface to iter->current.
|
|
* If successful, return ISC_R_SUCCESS.
|
|
* If the interface has an unsupported address family, or if
|
|
* some operation on it fails, return ISC_R_IGNORE to make
|
|
* the higher-level iterator code ignore it.
|
|
*/
|
|
|
|
static isc_result_t
|
|
internal_current4(isc_interfaceiter_t *iter) {
|
|
struct ifreq *ifrp;
|
|
struct ifreq ifreq;
|
|
int family;
|
|
char strbuf[ISC_STRERRORSIZE];
|
|
#if !defined(ISC_PLATFORM_HAVEIF_LADDRREQ) && defined(SIOCGLIFADDR)
|
|
struct lifreq lifreq;
|
|
#else
|
|
char sabuf[256];
|
|
#endif
|
|
int i, bits, prefixlen;
|
|
#ifdef __linux
|
|
isc_result_t result;
|
|
#endif
|
|
|
|
REQUIRE(VALID_IFITER(iter));
|
|
REQUIRE (iter->pos < (unsigned int) iter->ifc.ifc_len);
|
|
|
|
#ifdef __linux
|
|
result = linux_if_inet6_current(iter);
|
|
if (result != ISC_R_NOMORE)
|
|
return (result);
|
|
iter->first = ISC_TRUE;
|
|
#endif
|
|
|
|
ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
|
|
|
|
memset(&ifreq, 0, sizeof(ifreq));
|
|
memcpy(&ifreq, ifrp, sizeof(ifreq));
|
|
|
|
family = ifreq.ifr_addr.sa_family;
|
|
#if defined(ISC_PLATFORM_HAVEIPV6)
|
|
if (family != AF_INET && family != AF_INET6)
|
|
#else
|
|
if (family != AF_INET)
|
|
#endif
|
|
return (ISC_R_IGNORE);
|
|
|
|
memset(&iter->current, 0, sizeof(iter->current));
|
|
iter->current.af = family;
|
|
|
|
INSIST(sizeof(ifreq.ifr_name) <= sizeof(iter->current.name));
|
|
memset(iter->current.name, 0, sizeof(iter->current.name));
|
|
memcpy(iter->current.name, ifreq.ifr_name, sizeof(ifreq.ifr_name));
|
|
|
|
get_addr(family, &iter->current.address,
|
|
(struct sockaddr *)&ifrp->ifr_addr, ifreq.ifr_name);
|
|
|
|
/*
|
|
* If the interface does not have a address ignore it.
|
|
*/
|
|
switch (family) {
|
|
case AF_INET:
|
|
if (iter->current.address.type.in.s_addr == htonl(INADDR_ANY))
|
|
return (ISC_R_IGNORE);
|
|
break;
|
|
#ifdef ISC_PLATFORM_HAVEIPV6
|
|
case AF_INET6:
|
|
if (memcmp(&iter->current.address.type.in6, &in6addr_any,
|
|
sizeof(in6addr_any)) == 0)
|
|
return (ISC_R_IGNORE);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Get interface flags.
|
|
*/
|
|
|
|
iter->current.flags = 0;
|
|
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(iter->socket, SIOCGIFFLAGS, (char *) &ifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"%s: getting interface flags: %s",
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
|
|
if ((ifreq.ifr_flags & IFF_UP) != 0)
|
|
iter->current.flags |= INTERFACE_F_UP;
|
|
|
|
#ifdef IFF_POINTOPOINT
|
|
if ((ifreq.ifr_flags & IFF_POINTOPOINT) != 0)
|
|
iter->current.flags |= INTERFACE_F_POINTTOPOINT;
|
|
#endif
|
|
|
|
if ((ifreq.ifr_flags & IFF_LOOPBACK) != 0)
|
|
iter->current.flags |= INTERFACE_F_LOOPBACK;
|
|
|
|
if ((ifreq.ifr_flags & IFF_BROADCAST) != 0) {
|
|
iter->current.flags |= INTERFACE_F_BROADCAST;
|
|
}
|
|
|
|
#ifdef IFF_MULTICAST
|
|
if ((ifreq.ifr_flags & IFF_MULTICAST) != 0) {
|
|
iter->current.flags |= INTERFACE_F_MULTICAST;
|
|
}
|
|
#endif
|
|
|
|
if (family == AF_INET)
|
|
goto inet;
|
|
|
|
#if !defined(ISC_PLATFORM_HAVEIF_LADDRREQ) && defined(SIOCGLIFADDR)
|
|
memset(&lifreq, 0, sizeof(lifreq));
|
|
memcpy(lifreq.lifr_name, iter->current.name, sizeof(lifreq.lifr_name));
|
|
memcpy(&lifreq.lifr_addr, &iter->current.address.type.in6,
|
|
sizeof(iter->current.address.type.in6));
|
|
|
|
if (ioctl(iter->socket, SIOCGLIFADDR, &lifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"%s: getting interface address: %s",
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
prefixlen = lifreq.lifr_addrlen;
|
|
#else
|
|
isc_netaddr_format(&iter->current.address, sabuf, sizeof(sabuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETIFCONFIG,
|
|
"prefix length for %s is unknown "
|
|
"(assume 128)"), sabuf);
|
|
prefixlen = 128;
|
|
#endif
|
|
|
|
/*
|
|
* Netmask already zeroed.
|
|
*/
|
|
iter->current.netmask.family = family;
|
|
for (i = 0; i < 16; i++) {
|
|
if (prefixlen > 8) {
|
|
bits = 0;
|
|
prefixlen -= 8;
|
|
} else {
|
|
bits = 8 - prefixlen;
|
|
prefixlen = 0;
|
|
}
|
|
iter->current.netmask.type.in6.s6_addr[i] = (~0 << bits) & 0xff;
|
|
}
|
|
return (ISC_R_SUCCESS);
|
|
|
|
inet:
|
|
if (family != AF_INET)
|
|
return (ISC_R_IGNORE);
|
|
#ifdef IFF_POINTOPOINT
|
|
/*
|
|
* If the interface is point-to-point, get the destination address.
|
|
*/
|
|
if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(iter->socket, SIOCGIFDSTADDR, (char *)&ifreq)
|
|
< 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETDESTADDR,
|
|
"%s: getting "
|
|
"destination address: %s"),
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.dstaddress,
|
|
(struct sockaddr *)&ifreq.ifr_dstaddr, ifreq.ifr_name);
|
|
}
|
|
#endif
|
|
if ((iter->current.flags & INTERFACE_F_BROADCAST) != 0) {
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(iter->socket, SIOCGIFBRDADDR, (char *)&ifreq)
|
|
< 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETDESTADDR,
|
|
"%s: getting "
|
|
"broadcast address: %s"),
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.broadcast,
|
|
(struct sockaddr *)&ifreq.ifr_broadaddr, ifreq.ifr_name);
|
|
}
|
|
|
|
/*
|
|
* Get the network mask.
|
|
*/
|
|
memset(&ifreq, 0, sizeof(ifreq));
|
|
memcpy(&ifreq, ifrp, sizeof(ifreq));
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(iter->socket, SIOCGIFNETMASK, (char *)&ifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETNETMASK,
|
|
"%s: getting netmask: %s"),
|
|
ifreq.ifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.netmask,
|
|
(struct sockaddr *)&ifreq.ifr_addr, ifreq.ifr_name);
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
static isc_result_t
|
|
internal_current6(isc_interfaceiter_t *iter) {
|
|
struct LIFREQ *ifrp;
|
|
struct LIFREQ lifreq;
|
|
int family;
|
|
char strbuf[ISC_STRERRORSIZE];
|
|
int fd;
|
|
|
|
REQUIRE(VALID_IFITER(iter));
|
|
if (iter->result6 != ISC_R_SUCCESS)
|
|
return (iter->result6);
|
|
REQUIRE(iter->pos6 < (unsigned int) iter->lifc.lifc_len);
|
|
|
|
ifrp = (struct LIFREQ *)((char *) iter->lifc.lifc_req + iter->pos6);
|
|
|
|
memset(&lifreq, 0, sizeof(lifreq));
|
|
memcpy(&lifreq, ifrp, sizeof(lifreq));
|
|
|
|
family = lifreq.lifr_addr.ss_family;
|
|
#ifdef ISC_PLATFORM_HAVEIPV6
|
|
if (family != AF_INET && family != AF_INET6)
|
|
#else
|
|
if (family != AF_INET)
|
|
#endif
|
|
return (ISC_R_IGNORE);
|
|
|
|
memset(&iter->current, 0, sizeof(iter->current));
|
|
iter->current.af = family;
|
|
|
|
INSIST(sizeof(lifreq.lifr_name) <= sizeof(iter->current.name));
|
|
memset(iter->current.name, 0, sizeof(iter->current.name));
|
|
memcpy(iter->current.name, lifreq.lifr_name, sizeof(lifreq.lifr_name));
|
|
|
|
get_addr(family, &iter->current.address,
|
|
(struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
|
|
|
|
/*
|
|
* If the interface does not have a address ignore it.
|
|
*/
|
|
switch (family) {
|
|
case AF_INET:
|
|
if (iter->current.address.type.in.s_addr == htonl(INADDR_ANY))
|
|
return (ISC_R_IGNORE);
|
|
break;
|
|
#ifdef ISC_PLATFORM_HAVEIPV6
|
|
case AF_INET6:
|
|
if (memcmp(&iter->current.address.type.in6, &in6addr_any,
|
|
sizeof(in6addr_any)) == 0)
|
|
return (ISC_R_IGNORE);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Get interface flags.
|
|
*/
|
|
|
|
iter->current.flags = 0;
|
|
|
|
if (family == AF_INET6)
|
|
fd = iter->socket6;
|
|
else
|
|
fd = iter->socket;
|
|
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(fd, SIOCGLIFFLAGS, (char *) &lifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
"%s: getting interface flags: %s",
|
|
lifreq.lifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
|
|
if ((lifreq.lifr_flags & IFF_UP) != 0)
|
|
iter->current.flags |= INTERFACE_F_UP;
|
|
|
|
#ifdef IFF_POINTOPOINT
|
|
if ((lifreq.lifr_flags & IFF_POINTOPOINT) != 0)
|
|
iter->current.flags |= INTERFACE_F_POINTTOPOINT;
|
|
#endif
|
|
|
|
if ((lifreq.lifr_flags & IFF_LOOPBACK) != 0)
|
|
iter->current.flags |= INTERFACE_F_LOOPBACK;
|
|
|
|
if ((lifreq.lifr_flags & IFF_BROADCAST) != 0) {
|
|
iter->current.flags |= INTERFACE_F_BROADCAST;
|
|
}
|
|
|
|
#ifdef IFF_MULTICAST
|
|
if ((lifreq.lifr_flags & IFF_MULTICAST) != 0) {
|
|
iter->current.flags |= INTERFACE_F_MULTICAST;
|
|
}
|
|
#endif
|
|
|
|
#ifdef IFF_POINTOPOINT
|
|
/*
|
|
* If the interface is point-to-point, get the destination address.
|
|
*/
|
|
if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
|
|
/*
|
|
* Ignore the HP/UX warning about "interger overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(fd, SIOCGLIFDSTADDR, (char *)&lifreq)
|
|
< 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETDESTADDR,
|
|
"%s: getting "
|
|
"destination address: %s"),
|
|
lifreq.lifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.dstaddress,
|
|
(struct sockaddr *)&lifreq.lifr_dstaddr,
|
|
lifreq.lifr_name);
|
|
}
|
|
#endif
|
|
|
|
#ifdef SIOCGLIFBRDADDR
|
|
if ((iter->current.flags & INTERFACE_F_BROADCAST) != 0) {
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(iter->socket, SIOCGLIFBRDADDR, (char *)&lifreq)
|
|
< 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETDESTADDR,
|
|
"%s: getting "
|
|
"broadcast address: %s"),
|
|
lifreq.lifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.broadcast,
|
|
(struct sockaddr *)&lifreq.lifr_broadaddr,
|
|
lifreq.lifr_name);
|
|
}
|
|
#endif /* SIOCGLIFBRDADDR */
|
|
|
|
/*
|
|
* Get the network mask. Netmask already zeroed.
|
|
*/
|
|
memset(&lifreq, 0, sizeof(lifreq));
|
|
memcpy(&lifreq, ifrp, sizeof(lifreq));
|
|
|
|
#ifdef lifr_addrlen
|
|
/*
|
|
* Special case: if the system provides lifr_addrlen member, the
|
|
* netmask of an IPv6 address can be derived from the length, since
|
|
* an IPv6 address always has a contiguous mask.
|
|
*/
|
|
if (family == AF_INET6) {
|
|
int i, bits;
|
|
|
|
iter->current.netmask.family = family;
|
|
for (i = 0; i < lifreq.lifr_addrlen; i += 8) {
|
|
bits = lifreq.lifr_addrlen - i;
|
|
bits = (bits < 8) ? (8 - bits) : 0;
|
|
iter->current.netmask.type.in6.s6_addr[i / 8] =
|
|
(~0 << bits) & 0xff;
|
|
}
|
|
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Ignore the HP/UX warning about "integer overflow during
|
|
* conversion. It comes from its own macro definition,
|
|
* and is really hard to shut up.
|
|
*/
|
|
if (ioctl(fd, SIOCGLIFNETMASK, (char *)&lifreq) < 0) {
|
|
isc__strerror(errno, strbuf, sizeof(strbuf));
|
|
UNEXPECTED_ERROR(__FILE__, __LINE__,
|
|
isc_msgcat_get(isc_msgcat,
|
|
ISC_MSGSET_IFITERIOCTL,
|
|
ISC_MSG_GETNETMASK,
|
|
"%s: getting netmask: %s"),
|
|
lifreq.lifr_name, strbuf);
|
|
return (ISC_R_IGNORE);
|
|
}
|
|
get_addr(family, &iter->current.netmask,
|
|
(struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
|
|
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
#endif
|
|
|
|
static isc_result_t
|
|
internal_current(isc_interfaceiter_t *iter) {
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
if (iter->mode == 6) {
|
|
iter->result6 = internal_current6(iter);
|
|
if (iter->result6 != ISC_R_NOMORE)
|
|
return (iter->result6);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_TRUCLUSTER
|
|
if (!iter->clua_done)
|
|
return(internal_current_clusteralias(iter));
|
|
#endif
|
|
return (internal_current4(iter));
|
|
}
|
|
|
|
/*
|
|
* Step the iterator to the next interface. Unlike
|
|
* isc_interfaceiter_next(), this may leave the iterator
|
|
* positioned on an interface that will ultimately
|
|
* be ignored. Return ISC_R_NOMORE if there are no more
|
|
* interfaces, otherwise ISC_R_SUCCESS.
|
|
*/
|
|
static isc_result_t
|
|
internal_next4(isc_interfaceiter_t *iter) {
|
|
struct ifreq *ifrp;
|
|
|
|
REQUIRE (iter->pos < (unsigned int) iter->ifc.ifc_len);
|
|
|
|
#ifdef __linux
|
|
if (linux_if_inet6_next(iter) == ISC_R_SUCCESS)
|
|
return (ISC_R_SUCCESS);
|
|
if (!iter->first)
|
|
return (ISC_R_SUCCESS);
|
|
#endif
|
|
ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
|
|
|
|
#ifdef ISC_PLATFORM_HAVESALEN
|
|
if (ifrp->ifr_addr.sa_len > sizeof(struct sockaddr))
|
|
iter->pos += sizeof(ifrp->ifr_name) + ifrp->ifr_addr.sa_len;
|
|
else
|
|
#endif
|
|
iter->pos += sizeof(*ifrp);
|
|
|
|
if (iter->pos >= (unsigned int) iter->ifc.ifc_len)
|
|
return (ISC_R_NOMORE);
|
|
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
static isc_result_t
|
|
internal_next6(isc_interfaceiter_t *iter) {
|
|
struct LIFREQ *ifrp;
|
|
|
|
if (iter->result6 != ISC_R_SUCCESS && iter->result6 != ISC_R_IGNORE)
|
|
return (iter->result6);
|
|
|
|
REQUIRE(iter->pos6 < (unsigned int) iter->lifc.lifc_len);
|
|
|
|
ifrp = (struct LIFREQ *)((char *) iter->lifc.lifc_req + iter->pos6);
|
|
|
|
#ifdef ISC_PLATFORM_HAVESALEN
|
|
if (ifrp->lifr_addr.sa_len > sizeof(struct sockaddr))
|
|
iter->pos6 += sizeof(ifrp->lifr_name) + ifrp->lifr_addr.sa_len;
|
|
else
|
|
#endif
|
|
iter->pos6 += sizeof(*ifrp);
|
|
|
|
if (iter->pos6 >= (unsigned int) iter->lifc.lifc_len)
|
|
return (ISC_R_NOMORE);
|
|
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
#endif
|
|
|
|
static isc_result_t
|
|
internal_next(isc_interfaceiter_t *iter) {
|
|
#ifdef HAVE_TRUCLUSTER
|
|
int clua_result;
|
|
#endif
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
if (iter->mode == 6) {
|
|
iter->result6 = internal_next6(iter);
|
|
if (iter->result6 != ISC_R_NOMORE)
|
|
return (iter->result6);
|
|
if (iter->first6) {
|
|
iter->first6 = ISC_FALSE;
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef HAVE_TRUCLUSTER
|
|
if (!iter->clua_done) {
|
|
clua_result = clua_getaliasaddress(&iter->clua_sa,
|
|
&iter->clua_context);
|
|
if (clua_result != CLUA_SUCCESS)
|
|
iter->clua_done = ISC_TRUE;
|
|
return (ISC_R_SUCCESS);
|
|
}
|
|
#endif
|
|
return (internal_next4(iter));
|
|
}
|
|
|
|
static void
|
|
internal_destroy(isc_interfaceiter_t *iter) {
|
|
(void) close(iter->socket);
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
if (iter->socket6 != -1)
|
|
(void) close(iter->socket6);
|
|
if (iter->buf6 != NULL) {
|
|
isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
|
|
}
|
|
#endif
|
|
#ifdef __linux
|
|
if (iter->proc != NULL)
|
|
fclose(iter->proc);
|
|
#endif
|
|
}
|
|
|
|
static
|
|
void internal_first(isc_interfaceiter_t *iter) {
|
|
#ifdef HAVE_TRUCLUSTER
|
|
int clua_result;
|
|
#endif
|
|
iter->pos = 0;
|
|
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
|
|
iter->pos6 = 0;
|
|
if (iter->result6 == ISC_R_NOMORE)
|
|
iter->result6 = ISC_R_SUCCESS;
|
|
iter->first6 = ISC_TRUE;
|
|
#endif
|
|
#ifdef HAVE_TRUCLUSTER
|
|
iter->clua_context = 0;
|
|
clua_result = clua_getaliasaddress(&iter->clua_sa,
|
|
&iter->clua_context);
|
|
iter->clua_done = ISC_TF(clua_result != CLUA_SUCCESS);
|
|
#endif
|
|
#ifdef __linux
|
|
linux_if_inet6_first(iter);
|
|
#endif
|
|
}
|